When shopping for a clothes dryer, look for a model with a moisture sensor feature that automatically shuts off the machine when your clothes are dry. Not only will this save energy, it will reduce the wear and tear on clothes from over-drying.
When you take a vacation, don't forget to give your appliances a rest too. Turn off and unplug everything you can, set your water heater to the lowest setting and shut off the water supply to the dishwasher and washing machine.
Let your dishes air dry; if you don't have an automatic air-dry switch, turn off the control knob after the final rinse and prop the door open a little so the dishes will dry faster.
Clean the lint filter in the dryer after every load to improve air circulation.
When shopping for a dishwasher, find one that features advanced sensors that sense and adjust for the amount of soil on your dishes, using only as much water as necessary.
Place humidifiers and dehumidifiers away from walls and bulky furniture. These appliances work best when air circulates freely around them. Be sure to clean the unit often to prevent unhealthy mold and bacteria from developing.
Remember that dishwashers use less water than washing dishes by hand, about 6 gallons less per load; dishwashers also use hotter water than you would use if you were washing the dishes by hand, so they can do a better job of killing germs.
Use the cool-down cycle to allow the clothes to finish drying with the residual heat in the dryer.
Look for a dishwasher that allows you to choose between heat-drying and air-drying. Heath-drying elements draw considerable electricity; circulation fans for air-drying use very little.
Dry one load of clothes immediately after another. This will minimize heat loss, reducing warm-up and drying times.